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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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 RPM Question So when I'm cruising, let's say I'm at 95% throttle, I'm turning around 4200 to 4250 rpms. But when I open up to 100% throttle, my rpms drop to 4100 to 4150.
Is it starving? Could the governor be the problem even though at one point it turns up higher?
Here is a rough chart to help illustrate what I'm talking about.
Stock 27 Kohler.
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37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
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| Thu Aug 22, 2013 11:33 am |
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bayouboy
MMT Elite Member
Joined: Tue Jan 13, 2009 6:08 pm
Posts: 5376
Location: Venice, La
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Re: RPM Question Because its going up hill!
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| Thu Aug 22, 2013 11:46 am |
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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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Re: RPM Question Well shouldn't it pick back up on the down side???
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37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
SOLD -- 27 PD FPR 16x36 Skiff
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| Thu Aug 22, 2013 11:51 am |
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bayouboy
MMT Elite Member
Joined: Tue Jan 13, 2009 6:08 pm
Posts: 5376
Location: Venice, La
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Re: RPM Question Um I never seen a mudboat do down hill! lol
Lost velocity, jetting. How close are you to hitting the governor at wot.
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| Thu Aug 22, 2013 11:58 am |
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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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Re: RPM Question Governor is around 4600 neutral.
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37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
SOLD -- 27 PD FPR 16x36 Skiff
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| Thu Aug 22, 2013 1:14 pm |
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BlueShamu
MMT Elite Member
Joined: Mon Feb 06, 2012 6:13 pm
Posts: 5605
Location: D'town, LA
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Re: RPM Question Is this something that just started or has it always been this way?
Can you make it repeat this response in neutral, out of water?
Initially, sounds like you are hitting a rev limiter?? Mine will drop to 3600 once I hit the 4350 mark.
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| Thu Aug 22, 2013 1:22 pm |
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Will
MMT Elite Member
Joined: Fri Jul 08, 2011 1:54 pm
Posts: 8133
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Re: RPM Question
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Before the internet, the majority of the village idiots stayed in their villages.
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| Thu Aug 22, 2013 1:25 pm |
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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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Re: RPM Question
_________________
37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
SOLD -- 27 PD FPR 16x36 Skiff
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| Thu Aug 22, 2013 2:21 pm |
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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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Re: RPM Question
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37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
SOLD -- 27 PD FPR 16x36 Skiff
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| Thu Aug 22, 2013 2:23 pm |
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richard nagon
MMT Addict
Joined: Wed Apr 20, 2011 5:35 pm
Posts: 537
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Re: RPM Question your gov. has no idea if its carrying one delta or three deltas.
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JUST ANOTHER FARMER ON WELFARE
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| Thu Aug 22, 2013 5:15 pm |
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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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Re: RPM Question
_________________
37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
SOLD -- 27 PD FPR 16x36 Skiff
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| Thu Aug 22, 2013 5:27 pm |
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tchauvin
MMT 1000 Club
Joined: Wed Jul 13, 2011 6:23 pm
Posts: 4898
Location: Bourg LA
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Re: RPM Question Did you ever do a plug check at WOT? May be going lean at WOT. Easy way to check, pull choke lever in small increments if possible when at WOT see if rpm rises.
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| Thu Aug 22, 2013 5:38 pm |
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tchauvin
MMT 1000 Club
Joined: Wed Jul 13, 2011 6:23 pm
Posts: 4898
Location: Bourg LA
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Re: RPM Question
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| Thu Aug 22, 2013 5:38 pm |
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richard nagon
MMT Addict
Joined: Wed Apr 20, 2011 5:35 pm
Posts: 537
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Re: RPM Question here is something to try set gov. back to 3600 rpms and do another run test. get back to me. do it with a no load in boat.
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JUST ANOTHER FARMER ON WELFARE
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| Thu Aug 22, 2013 5:44 pm |
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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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Re: RPM Question
_________________
37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
SOLD -- 27 PD FPR 16x36 Skiff
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| Thu Aug 22, 2013 5:49 pm |
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JLACOUR
MMT 1000 Club
Joined: Wed Jan 14, 2009 8:18 pm
Posts: 4915
Location: Lake Jackson, TX
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Re: RPM Question
_________________
37 PD EFI FPR 18x48 Tiller
SOLD -- 36 PD EFI FPR 18x48 Stick Steer
SOLD -- 27 PD FPR 16x36 Skiff
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| Thu Aug 22, 2013 5:52 pm |
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richard nagon
MMT Addict
Joined: Wed Apr 20, 2011 5:35 pm
Posts: 537
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Re: RPM Question first of all set ur carb at wot. with ur throttle cable not any further. than set ur gov at lets say 4000-4100 rpms. and see what happens.
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JUST ANOTHER FARMER ON WELFARE
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| Thu Aug 22, 2013 6:30 pm |
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